u-tools.cn

https://u-tools.cn· First analyzed 15 May 2026· Updated 15 May 2026

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u-tools.cn

Mobile

Sponsored

Hosting Provider

Tencent Cloud

cloud.tencent.com

IP Address

162.14.121.251

Site Location

🇨🇳 Chinavia tld

Server Location

🇨🇳 Chengdu, China

ASN

AS45090

Organization

Tencent Cloud Computing (Beijing) Co., Ltd

Server

ESA

Nameservers

f1g1ns2.dnspod.net.f1g1ns1.dnspod.net.

Performance

Core Web Vitals

Weight

First Contentful Paint

1.8 s10%

Speed Index

2.3 s10%

Largest Contentful Paint

—25%

Total Blocking Time

0.0 ms30%

Cumulative Layout Shift

0.00025%

2.3 MB

51 requests

Image Optimization

Lazy Load

0–49

50–89

90–100

Architecture Stack

Hybrid

⚡ SSG

Frontend

Framework

Next.js

Infrastructure

Hosting

Tencent Cloud

Technology Stack

3 Technologies Detected

CSS Frameworks

Tailwind CSS

Material UI

Meta Frameworks

Next.js

SEO Analysis

D50/100

Meta Tags5/15

Content3/12

Headings6/8

Technical15/25

E-E-A-T3/7

Images2/7

Links5/5

URL5/5

Social0/5

Freshness0/4

Mobile3/4

Indexability3/3

u-tools.cnu-tools.cn

uTools - 人与 AI Agent 共用的工具平台

人与 AI Agent 共用的工具平台；让人更高效，让 Agent 更全能

Title Length28 chars

Recommended: 50-60 chars (~169px / 580px)

Description Length37 chars

Recommended: 120-160 chars

Issues (1)

• Most images missing alt text (27/34) — critical for accessibility and SEO

12 issues found

Upgrade to view details

Crawlability

Sitemap

Type: standard

3,321 URLs

robots.txt

3 rules

Sitemap reference found

Allows all crawlers

Local SEO

Local Search Readiness

6/100

Poor

2 13 2

This site doesn't appear to be a local business. Local SEO signals are optional for non-local websites.

Sponsored

AI & LLM Readiness

F29/100

Bot Access

20/25

Machine Read.

5/25

Schema Data

0/25

Citation

4/25

AI Bot Access

14/14 accessible

AI Search

OAI-SearchBot

PerplexityBot

Claude-SearchBot

Gemini-Deep-Research

DuckAssistBot

Training

GPTBot

ClaudeBot

Google-Extended

Meta-ExternalAgent

Bytespiderinfo

Amazonbot

Applebot-Extended

CCBotinfo

Fetch

ChatGPT-User

Machine Readability

llms.txt

llms-full.txt

Semantic HTML

Heading Hierarchy

navheader/footer

Text ratio:3%

Words:110

Token eff.:Too Short

Depth:2/5

Structured Data

No Schema

Citation Readiness

Opening Summary

Descriptive Headings

Canonical URL

Open Graph0/3

Twitter Card0/3

Language Tag

Publish Date

Author Info

Lists

Tables

TL;DR / Summary

About Page Link

Recommendations (10)

AI readiness recommendation preview...

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Accessibility

WCAG 2.1 Compliance

Evaluates how accessible your website is for users with disabilities, based on WCAG 2.1 guidelines. Checks images, forms, keyboard navigation, ARIA roles, and color contrast.

85/100

Passed

Critical

Warnings

Images & Alt Text

20/20

Checks if images have descriptive alt text for screen readers and visually impaired users.

Semantic Structure

20/20

Evaluates proper use of HTML5 semantic elements (header, nav, main, footer) and heading hierarchy.

Forms & Inputs

15/15

Verifies form fields have labels, error messages are clear, and inputs are properly associated.

Color & Contrast

15/15

Tests text-to-background color contrast ratios against WCAG AA/AAA minimum requirements.

Keyboard & Focus

9/15

Ensures all interactive elements are reachable and operable via keyboard (tab, enter, escape).

ARIA & Roles

6/15

Checks correct use of WAI-ARIA attributes (roles, states, properties) for assistive technologies.

1 recommendation

•Accessibility recommendation preview...

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Carbon Footprint

SWDM v4 · Eco-Score

Carbon emissions estimated using the Sustainable Web Design Model v4 (SWDM v4). Factors in data center, network, and device energy across new and returning visitors. Grade thresholds based on HTTP Archive percentiles.

27/100

289 mg

CO₂e / view

2.3 MB

Page Weight

50%

Cleaner Than

New Visitor

330 mg

Returning (cached)

165 mg

Annual (10K/mo)

34.6 kg

Emission Segments

Data Center

64 mg

Network

69 mg

Device

155 mg

Resource Breakdown

JavaScript

579.7 KB

Images

1.6 MB

CSS

139.2 KB

HTML

6.1 KB

Other

1.2 KB

Green Hosting Not Verified

Tencent Cloud

6 recommendations

•Carbon footprint recommendation preview...

Upgrade to view recommendations

Security Score

21%Critical

Interactive

HTTPS

No WAF

59d

Certificate Details

Type

Domain Validated (DV)

Certificate Authority

Let's Encrypt

Key Algorithm

RSA (2048 bit)

Signature

SHA-256 with RSA

TLS Version

TLSv1.3

HTTP Protocol

HTTP/1.1

Valid From

14.04.2026

Valid Until

13.07.2026

Subject Alternative Names (1)

www.u-tools.cn

SHA-256 Fingerprint

A2:1A:12:44:0F:4A:72:4E:B1:B9:FC:C4:44:3A:4A:73:EE:56:D5:48...

Top Recommendations

Security recommendation preview

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HTTP Headers

Developer Console

connection

keep-alive

content-encoding

📦 Gzip(gzip)

content-md5

rbkqQDy3R6RgmydLHUIT3Q==

content-type

text/html

date

Fri, 15 May 2026 08:33:35 GMT

eagleid

a3b5319c17788340143196437e

Good Warning Issue

Email Infrastructure

Custom Mail Server

Score

SPF

DKIM

DMARC

Domain Information

u-tools.cn

DNSSEC

Not Enabled

Privacy & Compliance

Cookie Consent Banner

GDPR Indicators

Mobile Compatibility

Viewport & Responsive Test

Tests how well your website works on mobile devices. Checks viewport configuration, responsive layout, touch targets, font readability, and simulates rendering across different screen sizes.

64/100

Mobile Friendly26 breakpoints

Viewport Meta

The viewport meta tag tells mobile browsers how to scale the page. Without it, mobile devices render at desktop width.

Responsive Design

Uses CSS media queries or flexible layouts to adapt content to different screen sizes automatically.

Touch Icons

Apple touch icons and favicons displayed when users add the site to their home screen on mobile devices.

Readable Font Size

Base font size should be at least 16px on mobile to ensure text is readable without zooming.

Relative Units

Using em, rem, %, or vw instead of fixed px values allows content to scale properly across screen sizes.

No H-Scroll Risk

No elements wider than the viewport that would cause horizontal scrolling on mobile devices.

Tap Targets OK

Interactive elements (buttons, links) are at least 48x48px with enough spacing to prevent accidental taps.

No Fixed Widths

No elements with fixed pixel widths that could overflow on smaller screens and break the layout.

Viewport

width=device-width, initial-scale=1, shrink-to-fit=no

1 recommendation

•Mobile compatibility recommendation preview...

Upgrade to view recommendations

Typography & Readability

-apple-system

WCAG Partial

78/100

Readability

/30

23/30

26px · LH --

Hierarchy

/20

14/20

1.77x ratio · ✓ H1→H6

WCAG

/25

19/25

3.65:1 min contrast

Performance

/25

22/25

System fonts

Heading Font

-apple-system

Sans46px

Body Font

-apple-system

Sans26px

Contrast Ratio

3.65:1

1 issue

Reading Comfort

Single Font Family

left aligned

46px

26px

✅ Excellent readability: 26px body text is ideal for all devices.

❌ Very complex text: Flesch score 22/100. Consider shorter sentences and simpler words.

⚠️ Partial contrast: 1 elements below WCAG AA threshold (min 3.6:1).

✅ Perfect heading hierarchy: Sequential h1→h2→h3 with single H1 — ideal for SEO & accessibility.

✅ System fonts: Zero font loading delay — best possible LCP impact.

Flesch 22

Color Palette

3 unique colors

3.58:1 AA Large Light

#ffffff

Background· 92.1%

#888789

Other· 3.4%

#f1f0f6

Primary· 4.5%

Business & Marketing Stack

1 Tools Detected

Growing

Behavior Analytics

Google AnalyticsFree

User behavior and product analytics

Sponsored

Scripts & Styles

16 Resources

Scripts

Styles

Async

Defer

Top Script Sources

u-tools.cn(11)hm.baidu.com(2)

Website Identity

u-tools.cn

Location detected: 🇨🇳 Chinavia tld

zh-cmn-Hans

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Last analyzed: 15 May 2026 at 08:34

Historical Analysis & Change Tracking